"Why is Plum Pudding called Plum Pudding when there are no plums in it? In the 17th century, plums referred to raisins or other fruits. Plumb is another spelling of plum. Prune is actually derived from the same word as plum - the Latin word was pruna, which changed in the Germanic languages into pluma. But the terms were quite confused in the 16th and 17th centuries and people talked about growing prunes in their garden."